Manufacture Of Phosphate Fertilisers, Sichuan, China.

According to Greenpeace's investigation, the fluoride content of the leaching solution of the 32.9 acres phosphogypsum slag heap is 277 mg/l.
According to state regulations, any figure over 100 mg/1 is hazardous and should be subject to strict supervision. No residential area should be built within 800 meters and no water source should be used within 150 meters.